CN107100815B - Small-sized electric hydraulic planger pump - Google Patents
Small-sized electric hydraulic planger pump Download PDFInfo
- Publication number
- CN107100815B CN107100815B CN201710368899.6A CN201710368899A CN107100815B CN 107100815 B CN107100815 B CN 107100815B CN 201710368899 A CN201710368899 A CN 201710368899A CN 107100815 B CN107100815 B CN 107100815B
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- Prior art keywords
- plunger
- piston
- oil
- switch
- small
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of small-sized electric hydraulic planger pump, including the pump housing, driving device and at least one hydraulic pumping unit.The pump housing has oil pocket.Driving device is set to the pump housing, and driving device includes motor and eccentric wheel, and eccentric wheel is connected to the output shaft of motor.At least one hydraulic pumping unit is connected to the circumferential direction of oil pocket.Each hydraulic pumping unit includes fluting cylinder, piston, cunning switch plunger and check valve.Cylinder of slotting is in hollow structure, and the lateral wall for cylinder of slotting has the axial oil groove of connection oil pocket.Piston is set in fluting cylinder, and the bottom of piston is connected with eccentric wheel.Cunning switch is set in fluting cylinder and is connected with piston, and piston downlink, cunning switch is opened, and hydraulic oil is sucked into the cavity of top land through axial oil groove and cunning switch；Piston stroking upward, cunning switch are closed.Plunger is connected to fluting cylinder, and the axis of plunger is vertical with the fluting axis of cylinder, and check valve connects plunger and executing agency.
Description
Technical field
The present invention relates to a kind of hydraulic pumps, and in particular to a kind of small-sized electric hydraulic planger pump.
Background technique
Hydraulic pump is a kind of energy conversion device, it is by the rotating mechanical energy of dynamic power machine (such as internal combustion engine, motor)
It is converted into the energy conversion component of hydraulic energy.Hydraulic pump provides certain oil pressure as Hydraulic Elements to drive execution system to produce
It is lively to make.The use scope of hydraulic pump is quite extensive, traffic, building, railway, bridge, the fire-fighting, Aeronautics and Astronautics, army being applied to
The various fields such as thing.
Since plunger pump invention application, the working characteristics such as pressure, flow, efficiency of plunger pump determine entire hydraulic
The performance of system, in order to improve the pressure of hydraulic system, it is necessary to improve the output pressure of hydraulic pump.High output pressure makes column
The outer dimension for filling in pump is larger, inconvenient loop combination arrangement, and use is very inconvenient.
Further, pressure is higher means that leakage is bigger, so that volumetric efficiency and the efficiency of pump reduce.In addition, pressure
Higher, pressure fluctuation and flow pulsation are bigger, caused by impact and noise it is also bigger.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, provides a kind of small-sized electric hydraulic planger pump.
To achieve the goals above, the present invention provide a kind of small-sized electric hydraulic planger pump, including the pump housing, driving device with
And at least one hydraulic pumping unit.The pump housing has oil pocket.Driving device is set to the pump housing, and driving device includes motor and bias
Wheel, eccentric wheel are connected to the output shaft of motor.At least one hydraulic pumping unit is connected to the circumferential direction of oil pocket.Each hydraulic pumping unit
Including fluting cylinder, piston, cunning switch, plunger and check valve.Cylinder of slotting is in hollow structure, and the lateral wall for cylinder of slotting has
There is the axial oil groove of connection oil pocket.Piston is set in fluting cylinder, and the bottom of piston is connected with eccentric wheel.Cunning switch is set
It is placed in fluting cylinder, piston downlink, cunning switch is opened, and hydraulic oil is sucked into top land through axial oil groove and cunning switch
Cavity in；Piston stroking upward, cunning switch are closed.Plunger is connected to fluting cylinder, the axis of plunger and the axis of fluting cylinder
It vertically, will be in the intracorporal hydraulic oil pressure to plunger of the chamber of top land while cunning switch is closed.Check valve connect plunger and
Executing agency.
An embodiment according to the present invention, cunning switch include switch plunger, switch return spring, stop bit disk and throttling
Disk.Switch plunger moves back and forth under the driving of piston.Switch return spring is sheathed on switch plunger.Stop bit disk is connected to
The top of switch plunger.Throttling plate is set to side of the stop bit disk far from switch plunger.
An embodiment according to the present invention, check valve include valve body, return spring and steel ball.There is oil outlet on valve body.
Return spring is connected to one end of valve body.Steel ball is connected to return spring and opposite with plunger, when the oil pressure of plunger output is greater than
When the deformation pressure of return spring, steel ball is opened, and hydraulic oil enters valve body and flows out through oil outlet.
An embodiment according to the present invention, each hydraulic pumping unit further include safety valve, and the side wall of plunger has relief hole,
Safety valve is connected to plunger by relief hole.
An embodiment according to the present invention, driving device further include the balance weight being arranged on camshaft, balance weight edge
The circumferential setting of eccentric wheel and opposite with eccentric wheel.
An embodiment according to the present invention, balance weight are in flat fan shape.
An embodiment according to the present invention, driving device further include retarder, ball bearing, bearing seal and axle sleeve.Subtract
There are at least two gears, the output shaft of motor is meshed at least two gears in fast device.Ball bearing is connected to retarder
Power output end.Bearing seal connects the ball bearing.Axle sleeve is set to the inside of ball bearing and in camshaft phase
Connection.
An embodiment according to the present invention, driving device further include clip, and clip compress to the end face of retarder close
Envelope.
An embodiment according to the present invention, driving device further include ring flange, and motor and retarder are fixed by ring flange
In the pump housing.
An embodiment according to the present invention, driving device include radiating block, have axial radiating groove on radiating block, axial to dissipate
Heat channel is oppositely arranged with the opening at the top of motor.
In conclusion small-sized electric hydraulic planger pump provided by the invention is driven in hydraulic pumping unit by eccentric wheel
Simultaneously the axis of plunger is arranged perpendicular to the axis of fluting cylinder in piston, and the setting is so that the axis of executing agency and the axis of motor
It is perpendicular, substantially reduce the axial dimension of motor so that the size of entire plunger pump more minimize with it is compact.It is cunning to open
It closes and the trim designs of plunger enables cunning switch, by hydraulic oil pressure to plunger, to enormously simplify plunger pump while closing
Oil circuit arrangement, not only further decrease the volume of entire plunger pump, while also substantially increasing the efficiency of the pump housing.
For above and other objects of the present invention, feature and advantage can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate attached drawing, it is described in detail below.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of the small-sized electric hydraulic planger pump of one embodiment of the invention offer.
Fig. 2 show the decomposition diagram of Fig. 1.
Fig. 3 show in Fig. 2 the enlarged diagram at A.
Fig. 4 show the assembly decomposition diagram of piston Yu cunning switch.
Specific embodiment
As depicted in figs. 1 and 2, small-sized electric hydraulic planger pump provided in this embodiment include the pump housing 1, driving device 2 with
And at least one hydraulic pumping unit 3.The pump housing 1 has oil pocket (not shown go out).Driving device 2 is set to the pump housing 1, driving device 2
Including motor 21 and eccentric wheel 22, eccentric wheel 22 is connected to the output shaft of motor 21.At least one hydraulic pumping unit 3 is connected to oil
The circumferential direction of chamber.In this present embodiment, small-sized electric hydraulic planger pump includes two hydraulic pump dresses for being symmetricly set on oil pocket circumferential direction
It sets.However, the present invention is not limited in any way this.In other embodiments, small-sized electric hydraulic planger pump may include one
Or three or more hydraulic pumping units.
Each hydraulic pumping unit 3 includes fluting cylinder 31, piston 32, cunning switch 33, plunger 34 and check valve 35.Fluting
Cylinder 31 is in hollow structure, and the lateral wall of fluting cylinder 31 has the axial oil groove 311 of connection oil pocket.Piston 32 is set to fluting
In cylinder 31, the bottom of piston 32 is connected with eccentric wheel 22, and under the driving of eccentric wheel 22, piston 32 is in fluting cylinder 31
Sliding, the two are in snug sliding fit state.Preferably, the fit clearance that the two is arranged reaches 0.005mm or less.
In this present embodiment, the microcephaly of the Diameter Gradual Change of piston spring, piston spring is mounted on the flat bottom of piston, living
The major part of plug spring is mounted on the conical nose of fluting cylinder 31.
In this present embodiment, the size of the piston in two hydraulic pumping units 3 is not identical, the ruler of one of piston 32 '
Very little is twice of another piston 32, which can increase considerably the oil mass output of plunger pump in certain field of load；And
After stress reaches a certain level, plunger pump can reduce the speed of service and increase the pressure of output.However, the present invention does not make this
Any restriction.In other embodiments, in more than two hydraulic pumping units the size of plunger can it is identical or be other sizes
Ratio.
Cunning switch 33 is set in fluting cylinder 31.When piston 32 is under the action of the return spring being located on piston 32
When downlink, the cavity at 32 top of piston is pumped into certain vacuum degree, at this point, cunning switch 33 is opened under atmospheric pressure,
In the cavity at the top that hydraulic oil is sucked into piston 32 through axial oil groove 311 and cunning switch 33.When eccentric wheel 22 drives piston
32 uplinks, cunning switch 33 are closed.Piston downlink refers to that the direction of motion of piston 32 is the direction far from cunning switch 33, living
The capable direction of motion is opposite with the direction of motion of piston downlink beyond the Great Wall.Plunger 34 is connected to fluting cylinder 31, the axis of plunger 34
It is vertical with the fluting axis of cylinder 31.In this present embodiment, slot cylinder side wall have a step-like oilhole 312, plunger 34
It is connected by the step-like oilhole 312 with fluting cylinder 31, and to prevent oil liquid leakage, is additionally provided with sealing between the two
Circle.However, the present invention is not limited in any way this.It is while cunning switch 33 is closed that the chamber at 32 top of piston is intracorporal hydraulic
In oil pressure to plunger 34.Check valve 35 connects plunger 34 and executing agency 100.
Small-sized electric hydraulic planger pump provided in this embodiment drives two positioned at oil pocket circumferential direction using eccentric wheel 22
Hydraulic pumping unit 3, and the axis of plunger 34 is set in hydraulic pumping unit perpendicular to the axis of fluting cylinder 31, which will make
The axis, the axis of fluting cylinder 31 and the axis three of plunger for obtaining motor 21 are mutually perpendicular to.The setting substantially reduces electricity
The size of 21 axis direction of machine, so that the outer dimension of entire plunger pump is more rationally and compact, and eccentric wheel 22, piston
32, the assembly relation of cunning switch 33 and plunger 34 4 not only makes oil circuit arrangement more reasonable and substantially increases column
Fill in the working efficiency of pump.
In this present embodiment, slotting is elastic conjunction between cylinder 31 and the pump housing 1, between plunger 34 and fluting cylinder 31
It is elastic conjunction.It is threaded connection between 35 pump housing 1 of check valve.
In this present embodiment, as shown in figure 4, cunning switch 33 includes switch plunger 331, switch return spring 332, stop bit
Disk 333 and throttling plate 334.The reciprocating motion of piston 32 drives switch plunger 331 to move.Switch return spring 332 is sheathed on
Switch plunger 331.Stop bit disk 333 is connected to the top of switch plunger 331.Throttling plate 334 is set to stop bit disk 333 far from switch
The side of piston 331.As shown in figure 3, check valve 35 includes valve body 351, return spring 352 and steel ball 353.Have on valve body 351
There is oil outlet.One end that return spring 352 is connected to valve body 351 by having threaded valve seat 354.Steel ball 353 is connected to back
Position spring 352 and opposite with plunger 34.Preferably, the rigidity for the return spring 352 being arranged in check valve 35 is greater than switch return
The rigidity of spring 332.
Specific oil circuit are as follows: return spring band 32 downlink of piston on piston 32, the cavity at 32 top of piston are pumped into
Certain vacuum degree, switch plunger 331 drives 333 downlink of stop bit disk at this time, and cunning switch 33 is opened, and the oil liquid in oil pocket is through slotting
Axial oil groove 311 and throttling plate 334 on cylinder 31 are drawn into the cavity at 32 top of piston.When eccentric wheel 22 drives piston 32
When uplink, under the action of switching return spring 332, stop bit disk 333 closes throttling plate 334, and the chamber at 32 top of piston is intracorporal
Oil liquid is extruded into plunger 34.Since the steel ball 353 in check valve 35 is oppositely arranged with plunger 34, when the oil that plunger 34 exports
When pressure is greater than the elastic force of return spring 352, steel ball 353 is opened, and oil liquid enters in check valve 35 and through fuel-displaced in check valve
Hole flow to executing agency 100, and pushing executing mechanism 100 moves, and hydraulic oil is flow in oil pocket through back oil road, realizes that entire oil circuit follows
Ring.For the leakage for preventing hydraulic oil, in this present embodiment, check valve 35 further includes the multiple sealing rings being arranged on valve body 351.
However, the present invention is not limited in any way this.
In this present embodiment, hydraulic pumping unit 3 further include closing fluting cylinder 31 and cunning switch 33 end cap 36 and
Strainer (due to angle, not shown go out) between end cap 36 and throttling plate 334.When cunning switch 33 opening, oil
Intracavitary oil liquid is drawn into the cavity at 32 top of piston through axial oil groove 311, strainer and the throttling plate 334 on fluting cylinder 31
It is interior.Strainer can be filtered the oil liquid for entering throttling plate 334, remove the impurity in degreasing fluid, prevent impurity to cunning switch
The components such as 33 and plunger 34 result in blockage.Oil liquid leakage in order to prevent is enclosed in strainer using end cap 36, bolt, O-shaped rubber ring
In the pump housing 1, under bolt power effect, O-ring is compressed tightly against in seal groove by end cap 36, and oil liquid is effectively prevent to leak.
In this present embodiment, each hydraulic pumping unit further includes safety valve 37, and the side wall of plunger 34 has relief hole 341,
Safety valve 37 is connected to plunger 34 by relief hole 341.When the oil pressure by plunger 34 is excessive so that being greater than safety valve 37
When cracking pressure, safety valve 37 automatically opens carry out pressure release, plays the role of safeguard protection.
In this present embodiment, small-sized electric hydraulic planger pump further includes the flexible oil tank being connected with the oil pocket in the pump housing 1
4.However, the present invention is not limited in any way this.
The reciprocating motion of piston 32 is realized by the rotation of eccentric wheel 22, to overcome eccentric wheel to generate when rotated
Unbalanced inertia force, in this present embodiment, driving device 2 further includes the balance weight being arranged on camshaft, balance weight
It is arranged along the circumferential direction of eccentric wheel 22 and opposite with eccentric wheel 22.In this present embodiment, the shape of balance weight is in flat fan shape
And be gradually reduced along the thickness of fan-shaped radial equilibrium weight, flat structure substantially reduces the axial length of balance weight,
So that it will not interfere the assembly between eccentric wheel 22 and motor 21, further, the balance weight of sector structure can be
The inertia force generated in wider angular range to eccentric wheel is balanced.However, the present invention is not limited in any way this.Yu Qi
In its embodiment, balance weight can be made of the thin balance weight of multiple stepped distributions.
Since the revolving speed of motor 21 is too fast, to match the revolving speed of motor 21 and the movement velocity of piston 32, in the present embodiment
In, setting driving device 2 further includes retarder 24, ball bearing 25, bearing seal 26 and axle sleeve 27.Have extremely in retarder 24
Few two gears, the output shaft of motor 21 are meshed at least two gears.In this present embodiment, in retarder 24 there are three tools
Reduction gearing.However, the quantity of reduction gearing of the present invention is not limited in any way.Ball bearing 25 is connected to the power of retarder 24
Output end, bearing seal 26 connect ball bearing 25, and axle sleeve 27 is set in ball bearing 25 and connecting eccentric wheel axis.Motor 21
Rotary motion be transferred on camshaft by retarder 24, axle sleeve 27.
In order to reduce the abrasion of long-play, needle bearing 28, needle bearing are installed on the outer profile of eccentric wheel 22
28 remain contact relation with the flat bottom of piston 32.In this present embodiment, 28 outer surface of needle bearing is wider, intermediate
Open up annular oil groove (due to the relationship at visual angle, not shown go out).Needle bearing 28 and piston 32 remain contact relation, are transporting
When turning, eccentric wheel 22 drives the bottom flat structure of needle bearing 28 and piston 32 to form a pair of of kinematic pair, eccentric wheel 22
Rotary motion is converted into pumping for piston 32, and kinematic pair forms lubricating oil film under the action of annular oil groove oil liquid.
In order not to allow plunger pump inner fluid to seal in retarder 24 and motor 21, the end face seal on retarder 24 uses clip
Compression fit is carried out, to prevent oil liquid from leaking phenomenon in the string of 24 two sides of retarder.In this present embodiment, motor 21 and retarder 24
It is fixed on the pump housing 1 by ring flange 23 and bolt.
Certain heat accumulation can be generated since motor 21 operates for a long time, for the heat dissipation effect for improving motor 21, Yu Benshi
It applies in example, driving device includes radiating block 29, has axial radiating groove 291, axial radiating groove 291 and motor 21 on radiating block 29
The opening at top is oppositely arranged.Motor 21 operates generated heat and is radiated by radiating groove 291, effectively avoids inside motor 21
Heat accumulation.In this present embodiment, radiating groove 291 is projected as an arc curve in the end of radiating block 29, the setting and electricity
The opening exact matching at 21 top of machine.However, the present invention is not limited in any way this.The effect of radiating groove is in motor 21
Heat heat dissipation channel is provided, what the shape of radiating groove influenced is the shape of heat dissipation.
In conclusion small-sized electric hydraulic planger pump provided by the invention is driven in hydraulic pumping unit by eccentric wheel
Simultaneously the axis of plunger is arranged perpendicular to the axis of fluting cylinder in piston, and the setting is so that the axis of executing agency and the axis of motor
It is perpendicular, substantially reduce the axial dimension of motor so that the size of entire plunger pump more minimize with it is compact.It is cunning to open
It closes and the trim designs of plunger enables cunning switch, by hydraulic oil pressure to plunger, to enormously simplify plunger pump while closing
Oil circuit arrangement, not only further decrease the volume of entire plunger pump, while also substantially increasing the efficiency of the pump housing.
Although the present invention is disclosed above by preferred embodiment, however, it is not intended to limit the invention, this any known skill
Skill person can make some changes and embellishment without departing from the spirit and scope of the present invention, therefore protection scope of the present invention is worked as
Subject to claims range claimed.
Claims (10)
1. a kind of small-sized electric hydraulic planger pump characterized by comprising
The pump housing has oil pocket；
Driving device is set to the pump housing, and the driving device includes motor and eccentric wheel, and the eccentric wheel is connected to described
The output shaft of motor；
At least one hydraulic pumping unit, is connected to the circumferential direction of the oil pocket, and each hydraulic pumping unit includes:
Fluting cylinder is in hollow structure, and the lateral wall of the fluting cylinder has the axial oil groove of connection oil pocket；
Piston is set in the fluting cylinder, and the bottom of the piston is connected with the eccentric wheel；
Cunning switch is set in the fluting cylinder, piston downlink, and cunning switch is opened, and hydraulic oil is through axial oil groove and oil
Slide switch is sucked into the cavity of top land；Piston stroking upward, cunning switch are closed；
Plunger is connected to the fluting cylinder, and the axis of the plunger is vertical with the fluting axis of cylinder, and cunning switch closes
It will be in the intracorporal hydraulic oil pressure to plunger of the chamber of top land while closing；
Check valve connects plunger and executing agency.
2. small-sized electric hydraulic planger pump according to claim 1, which is characterized in that it is described it is cunning switch include:
Switch plunger moves back and forth under the driving of piston；
Return spring is switched, the switch plunger is sheathed on；
Stop bit disk is connected to the top of switch plunger；
Throttling plate is set to the side of the stop bit disk far from switch plunger.
3. small-sized electric hydraulic planger pump according to claim 1, which is characterized in that the check valve includes:
Valve body has oil outlet on the valve body；
Return spring is connected to one end of the valve body；
Steel ball is connected to the return spring and opposite with the plunger, when the oil pressure of plunger output is greater than the shape of return spring
When pressure changeable, steel ball is opened, and hydraulic oil enters valve body and flows out through oil outlet.
4. small-sized electric hydraulic planger pump according to claim 1, which is characterized in that each hydraulic pumping unit further includes peace
The side wall of full valve, the plunger has relief hole, and the safety valve is connected to plunger by relief hole.
5. small-sized electric hydraulic planger pump according to claim 1, which is characterized in that the driving device further includes setting
Balance weight on camshaft, the balance weight is along the circumferential setting of eccentric wheel and opposite with eccentric wheel.
6. small-sized electric hydraulic planger pump according to claim 5, which is characterized in that the balance weight is in flat fan
Shape.
7. small-sized electric hydraulic planger pump according to claim 1, which is characterized in that the driving device further include:
Retarder, the retarder is interior to have at least two gears, and the output shaft of the motor is meshed at least two gears；
Ball bearing is connected to the power output end of retarder；
Bearing seal connects the ball bearing；
Axle sleeve is set to the inside of ball bearing and is connected with camshaft.
8. small-sized electric hydraulic planger pump according to claim 7, which is characterized in that the driving device further includes card
Hoop, clip carry out compression sealing to the end face of retarder.
9. small-sized electric hydraulic planger pump according to claim 7, which is characterized in that the driving device further includes flange
Disk, the motor and retarder are fixed on the pump housing by ring flange.
10. small-sized electric hydraulic planger pump according to claim 1, which is characterized in that the driving device includes heat dissipation
Block, has axial radiating groove on the radiating block, and the axial direction radiating groove is oppositely arranged with the opening at the top of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368899.6A CN107100815B (en) | 2017-05-23 | 2017-05-23 | Small-sized electric hydraulic planger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368899.6A CN107100815B (en) | 2017-05-23 | 2017-05-23 | Small-sized electric hydraulic planger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107100815A CN107100815A (en) | 2017-08-29 |
| CN107100815B true CN107100815B (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710368899.6A Active CN107100815B (en) | 2017-05-23 | 2017-05-23 | Small-sized electric hydraulic planger pump |
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| CN (1) | CN107100815B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105060A (en) * | 2018-01-10 | 2018-06-01 | 浙江工业大学 | A kind of squeezer of integrated high pressure plunger-type fuel pump driving |
| CN108343574B (en) * | 2018-03-20 | 2023-09-22 | 浙江工业大学 | High-pressure variable plunger oil pump system device |
| CN109026862B (en) * | 2018-09-11 | 2023-08-08 | 欧盾科技有限公司 | Pressure-adjustable bending machine |
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| DE102008060659A1 (en) * | 2008-12-08 | 2010-06-10 | Bentec Gmbh Drilling & Oilfield Systems | Clamping device for cylinder liners and their use and rinsing pump with clamping device |
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|---|---|---|---|---|
| US5556264A (en) * | 1995-07-28 | 1996-09-17 | Gp Companies, Inc. | Low profile positive displacement pump system |
| US6116868A (en) * | 1999-03-01 | 2000-09-12 | Lu; Chung-Tai | Multi-faceted valve head for hydraulic pump |
| CN200978782Y (en) * | 2006-11-09 | 2007-11-21 | 浙江绿田机电制造有限公司 | Piston pump for high-pressure cleaning device |
| CN201190644Y (en) * | 2008-04-18 | 2009-02-04 | 南京威孚金宁有限公司 | Oil supply timing mechanism for electric-controlled dispensing pump |
| CN206770146U (en) * | 2017-05-23 | 2017-12-19 | 杭州众拓科技有限公司 | Small-sized electric hydraulic planger pump |
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| CN107100815A (en) | 2017-08-29 |
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